If no number can be used more than once, how many different 2-digit numbers can be formed from the digits 4, 6, and 8?

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

Horizontal change or the change of x